SU1222846A1 - Mechanized set for mining thick steep coal seams - Google Patents

Description

The research relates to the mining industry and can be used in the development of powerful steep seams.

The purpose of the invention is to increase the efficiency of management of the complex.

FIG. 1 shows a scheme for implementing a method for mining high-powered steep coal seams by a cleaning mechanized complex; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. 2; in fig. 4- section BB in FIG. 3; in fig. 5 shows a section B-B in FIG. 3; in fig. 6 — node II in FIG. 3; in fig. 7 is a view of FIG. 6

Extraction field 1 (Fig. 1) of a powerful steep seam is prepared by storied field drifts 2 and 3.

On the flanks, the working pole 4 is prepared on the haulage horizon from the field drift 3 with two cross-sections 5 and 6, and on the upper horizon — two double-angle leads 7 and 8. Between the overlying (spent) and worked-down column 4, the installation chamber 9 passes through the entire formation thickness, leaving the corner of coal 10, and attached to the ceiling of the chamber 9 with special cable anchors 11 with flexible overlap 12.

Attached to the fixed chamber 9 through a certain distance are the fittings 13 with the upper field drift 2, which serve to supply gravity bookmarks during the working out of the pole 4. Each practiced column 4 is contoured along the slope by the ramps 14 and 15, which pass along the lying and hanging sides reservoir. Under the flexible overlap 12, mounting chambers pass through the roof and near the layer of the seam and mount the overlap 16, and from below under it are installed the bedding units 17 and 18 of the KVZ type.

The cleaning mechanized complex 19 works by falling.

Rock pressure control is a gravity bed, which is fed into the excavated space by compressed air through pipelines 20, mounted in the sled 13, from the ventilation drift.

In the ascending order, the section is ventilated from the haulage field drift 3 to square 5 and 6, ramp 14 and

15 to slaughter 21, through connections 22 to slopes 23 of the prepared pole 24 and through crosscut 25 to the upper field drift 2.

Layered cleaning units 17 and 18 and the panel covering connected with them

16 form a single cleaning mechanized complex 19 (FIGS. 1 and 2) for the proposed method of excavating steep coal seams.

Layer assemblies 17 and 18 (Fig. 2), made on the KVZ lining base, are equipped with AShA-type struts 26, which excavate the outermost layers and transport the coal along the bottom to the ramps 15. The dredging of the middle layer 27 is performed from the outermost layers by combines 28, which

moving along the bases 29 of the layered aggregates 17 and 18, and in case of decreasing the power of the ejectable pole, they can change the angle of inclination of the screws 30 in the plane of the bottom, thereby reducing the width of the capture of the beaten off coal. The coal load from the harvesters 28 enters the conveyors 31 of the outflow layers of the outermost layers and is transported to the ramps 15, which, together with the slopes 14 (Fig. 1), are canceled

0 as the removable pillar 4 is being processed. The overlap 16 (Fig. 2) consists of spacer telescopic sections 32 supported on the coal mass of the middle layer 27, the supporting elements 33 of which are connected by means of spacers 34 to hydro hydraulic sliding consoles

35 of the upper cleaning unit 17 and with hydraulically-mounted retractable brackets

36 lower unit 18.

Each section of the lining 37 (Fig. 2-4)

Q cleaning units 17 and 18 have an overlap 38 connected to the base 39 by a hinge-shaped three hydraulic legs 40, and a link of the base beam 41. The latter consists of between the overlap 38 and the base 39 of the lower 42 and the upper 43 frames, along which the overlap 38 the base 39, and the hydroficated telescope 44, which is rigidly connected with the lower frame 42, and pivotally with the upper frame 43. The lower frame 42 rests on the base 39 through hydraulic chute 45, and the upper frame 43 - on

 the overlap 38 through the telescope 44. The link of the link of the base beam 41 with the overlap 38 and the base 39 is carried out by means of the upper 46 and lower 47 jacks of movement, the upper jack 46 being double with an additional hydrocylinder, which allows controlling the angle of inclination of the base in the longitudinal plane. The link of the base beams 41 of all sections are connected to each other at three points by hinges (power by themselves) and form a spatial baseline of the bottomhole support, flexible in hypsometry, but restrictedly rigid in the plane of the formation.

To maintain the edges of the middle layer 27

j (Fig. 2) the upper unit 17 based on

39 has hydroficated consoles 48,

and the lower unit 18 has on the ceiling

38 hydroficated consoles 49, and for

supports for bottomhole aggregates 17 and 18 have retractable hydraulic consoles 50

0 on floors 38 and bases 39.

To provide directional movement of the supports (Fig. 4), the bases 39 of the sections of the supports 37 are provided with protrusions 51 and 52 passing through the lower frames 42 of the links of the base beam 41. On the frames 42 pivotally 5 are installed levers 53 which are in contact during the process of sliding the base by means of hydraulic cylinders 54 s protrusions 51 and 52 bases of 39 lining sections 37.

The shield section 32 comprises a beam 55 (FIGS. 2 and 5), two retractable beams 56 and 57 with articulated support elements 33. From the bottom side of section 32, a hydroresistance 58 with a hinge pin 59 is suspended, which, resting on the coal face the middle layer serves as an additional support for blocking 16, unloading mechanized lining of the extreme layers of aggregates 17 and 18 from the rock pressure of the crushed rocks.

Hydraulic posts 58 are suspended in sections 32 in a staggered manner to speed up the passage of working combines 28. Hydraulic posts 58 are folded with jacks 60 and can be re-linked along beam 55 as the plate thickness is changed.

In order to perceive the lateral rock pressure and adaptability to the varying thickness of the developed seam, the coal of the panel 32 section of the shield 16 by means of the sliding beams 56 and 57, the pillars 61 are spaced between the roof and the soil of the layer. The beam 57 of each section 32 of the shield is locked with a finger 62 and if necessary can be moved out of the beam 55. The sliders 63 and guides 64 pivotally connected to the supporting elements 33 and by means of hydraulic cylinders 65 ensure the displacement of the support elements, if necessary.

o

five

five

0

cops 33 of panel 32 overlap 16 of normal formation with respect to telescopic cantilevers 35 and 36 of layered complexes of aggregates 17 and 18 (Fig. 2), preventing the latter from breaking.

The overlap 16 (Fig. 2) is overlapped on top by flexible ceilings 66 and 67, the edges of which are fixed to the supporting elements 33 of each quarter of the section 32.

All the machines of the cleaning mechanized complex 19 (Fig. 1 and 2) are interconnected by the technological sequence of coal mining operations and kinematically work as a single unit.

The extraction cycle during the operation of the cleaning mechanized complex 19 consists of the following basic operations: simultaneous or sequential mechanized excavation of a 0.5-meter-wide coal strip by conveyor-belts 26 and combines 28; moving the bases of 29 layered units 17 and 18 hydraulic cylinders with simultaneous notching of combines 28 and conveyor-wheels 26; successive advancing of the lining sections 37 of the layered cleaning units 17 and 18 and associated panel overlap sections 32 with 16 hydraulic cylinders 46 and 47, the latter being moved after the shifting of the lining sections 37; filing bookmarks in the goaf.

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to.

Riga.g

33

B - BQioSepHymo}

FIG.

Compiled by G. Malyshko

Editor Y. SeredaTehred I. VeresKorrektor G. Reshetnik

Order 1684/32 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

MECHANIZED COMPLEX FOR TREATMENT OF POWERFUL STEEP COAL COAL STRESSES, including cleaning units located along the edges with excavation machines, mechanized supports and additional excavation bodies mounted on rails, a shield covering located on the block side of the units perpendicular to their base and floors with supports, characterized in that, in order to increase the management efficiency of the complex, each section of the shield panel is made telescopic it is equipped with spreader hydraulic cylinders located along the section axis and pivotally connected to the supporting elements of the supports, while additional extraction bodies are fixed in the dam part of the treatment units with the possibility of installation behind the bases of the latter, and the guides of the additional excavation organs are located in the dam part of the latter.